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 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of the misuhisa.net nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef STRING_HPP_
#define STRING_HPP_

#include "Object.hpp"

#include <string>

namespace nyu {

class String : public Object {
public:
    virtual Value getSlot(Value name, Context& c);
    virtual void putSlot(Value name, Value value, Context& c);

    virtual unsigned int hash();

    virtual String* toString(Context& c);

    virtual bool opEq(Value v, Context& c, bool is_tail = false);

    virtual int_type length(Context& c);

    virtual bool revOpEq(String* other, Context& c, bool is_tail = false);

    virtual const char* strval() const = 0;

    static unsigned int calcHash(const char* str);

    static void initialize();
    static void finalize();

protected:
    String(unsigned int h);
    virtual ~String();

    unsigned int hash_;

public:
    static String* PROTO;

    static String* OBJECT;
    static String* STRING;
    static String* ARRAY;
    static String* RANGE;
};

class StrPool;
class PooledString : public String {
public:
    PooledString(char* value, unsigned int h);
    virtual ~PooledString();

    virtual const char* strval() const;

private:
    char* value_;
};

class DynamicString : public String {
public:
    DynamicString(const std::string& value);

    virtual unsigned int hash();

    virtual int_type length(Context& c);

    virtual const char* strval() const;

private:
    std::string value_;
};

class StaticString : public String {
public:
    StaticString(const char* value);

    virtual const char* strval() const;

private:
    const char* value_;
};

}

#endif /* STRING_HPP_ */
